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e-paper-display/bcm2835-1.71/e-Paper/Arduino/epd1in54_V2/epd1in54_V2.cpp

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/*****************************************************************************
* | File : epd1in54_V2.cpp
* | Author : Waveshare team
* | Function : 1.54inch e-paper V2
* | Info :
*----------------
* | This version: V1.0
* | Date : 2019-06-24
* | Info :
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documnetation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
******************************************************************************/
#include <stdlib.h>
#include "epd1in54_V2.h"
// waveform full refresh
unsigned char WF_Full_1IN54[159] =
{
0x80, 0x48, 0x40, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x40, 0x48, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x80, 0x48, 0x40, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x40, 0x48, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0xA, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x8, 0x1, 0x0, 0x8, 0x1, 0x0, 0x2,
0xA, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x0, 0x0, 0x0,
0x22, 0x17, 0x41, 0x0, 0x32, 0x20
};
// waveform partial refresh(fast)
unsigned char WF_PARTIAL_1IN54_0[159] =
{
0x0,0x40,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x80,0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x40,0x40,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x0,0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0xF,0x0,0x0,0x0,0x0,0x0,0x0,
0x1,0x1,0x0,0x0,0x0,0x0,0x0,
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x0,0x0,0x0,0x0,0x0,0x0,0x0,
0x22,0x22,0x22,0x22,0x22,0x22,0x0,0x0,0x0,
0x02,0x17,0x41,0xB0,0x32,0x28,
};
Epd::~Epd()
{
};
Epd::Epd()
{
reset_pin = RST_PIN;
dc_pin = DC_PIN;
cs_pin = CS_PIN;
busy_pin = BUSY_PIN;
width = EPD_WIDTH;
height = EPD_HEIGHT;
};
/**
* @brief: basic function for sending commands
*/
void Epd::SendCommand(unsigned char command)
{
DigitalWrite(dc_pin, LOW);
SpiTransfer(command);
}
/**
* @brief: basic function for sending data
*/
void Epd::SendData(unsigned char data)
{
DigitalWrite(dc_pin, HIGH);
SpiTransfer(data);
}
/**
* @brief: Wait until the busy_pin goes HIGH
*/
void Epd::WaitUntilIdle(void)
{
while(DigitalRead(busy_pin) == 1) { //LOW: idle, HIGH: busy
DelayMs(100);
}
DelayMs(200);
}
void Epd::Lut(unsigned char* lut)
{
SendCommand(0x32);
for(unsigned char i=0; i<153; i++)
SendData(lut[i]);
WaitUntilIdle();
}
void Epd::SetLut(unsigned char* lut)
{
Lut(lut);
SendCommand(0x3f);
SendData(lut[153]);
SendCommand(0x03);
SendData(lut[154]);
SendCommand(0x04);
SendData(lut[155]);
SendData(lut[156]);
SendData(lut[157]);
SendCommand(0x2c);
SendData(lut[158]);
}
// High Direction
int Epd::HDirInit(void)
{
/* this calls the peripheral hardware interface, see epdif */
if (IfInit() != 0) {
return -1;
}
/* EPD hardware init start */
Reset();
WaitUntilIdle();
SendCommand(0x12); //SWRESET
WaitUntilIdle();
SendCommand(0x01); //Driver output control
SendData(0xC7);
SendData(0x00);
SendData(0x01);
SendCommand(0x11); //data entry mode
SendData(0x01);
SendCommand(0x44); //set Ram-X address start/end position
SendData(0x00);
SendData(0x18); //0x0C-->(18+1)*8=200
SendCommand(0x45); //set Ram-Y address start/end position
SendData(0xC7); //0xC7-->(199+1)=200
SendData(0x00);
SendData(0x00);
SendData(0x00);
SendCommand(0x3C); //BorderWavefrom
SendData(0x01);
SendCommand(0x18);
SendData(0x80);
SendCommand(0x22); // //Load Temperature and waveform setting.
SendData(0XB1);
SendCommand(0x20);
SendCommand(0x4E); // set RAM x address count to 0;
SendData(0x00);
SendCommand(0x4F); // set RAM y address count to 0X199;
SendData(0xC7);
SendData(0x00);
WaitUntilIdle();
SetLut(WF_Full_1IN54);
/* EPD hardware init end */
return 0;
}
// Low Direction
int Epd::LDirInit(void)
{
/* this calls the peripheral hardware interface, see epdif */
if (IfInit() != 0) {
return -1;
}
/* EPD hardware init start */
Reset();
WaitUntilIdle();
SendCommand(0x12); //SWRESET
WaitUntilIdle();
SendCommand(0x01); //Driver output control
SendData(0xC7);
SendData(0x00);
SendData(0x00);
SendCommand(0x11); //data entry mode
SendData(0x03);
SendCommand(0x44);
/* x point must be the multiple of 8 or the last 3 bits will be ignored */
SendData((0 >> 3) & 0xFF);
SendData((199 >> 3) & 0xFF);
SendCommand(0x45);
SendData(0 & 0xFF);
SendData((0 >> 8) & 0xFF);
SendData(199 & 0xFF);
SendData((199 >> 8) & 0xFF);
SendCommand(0x3C); //BorderWavefrom
SendData(0x01);
SendCommand(0x18);
SendData(0x80);
SendCommand(0x22); // //Load Temperature and waveform setting.
SendData(0XB1);
SendCommand(0x20);
SendCommand(0x4E); // set RAM x address count to 0;
SendData(0x00);
SendCommand(0x4F); // set RAM y address count to 0X199;
SendData(0xC7);
SendData(0x00);
WaitUntilIdle();
SetLut(WF_Full_1IN54);
/* EPD hardware init end */
return 0;
}
/**
* @brief: module reset.
* often used to awaken the module in deep sleep,
* see Epd::Sleep();
*/
void Epd::Reset(void)
{
DigitalWrite(reset_pin, HIGH);
DelayMs(20);
DigitalWrite(reset_pin, LOW); //module reset
DelayMs(5);
DigitalWrite(reset_pin, HIGH);
DelayMs(20);
}
void Epd::Clear(void)
{
int w, h;
w = (EPD_WIDTH % 8 == 0)? (EPD_WIDTH / 8 ): (EPD_WIDTH / 8 + 1);
h = EPD_HEIGHT;
SendCommand(0x24);
for (int j = 0; j < h; j++) {
for (int i = 0; i < w; i++) {
SendData(0xff);
}
}
SendCommand(0x26);
for (int j = 0; j < h; j++) {
for (int i = 0; i < w; i++) {
SendData(0xff);
}
}
//DISPLAY REFRESH
DisplayFrame();
}
void Epd::Display(const unsigned char* frame_buffer)
{
int w = (EPD_WIDTH % 8 == 0)? (EPD_WIDTH / 8 ): (EPD_WIDTH / 8 + 1);
int h = EPD_HEIGHT;
if (frame_buffer != NULL) {
SendCommand(0x24);
for (int j = 0; j < h; j++) {
for (int i = 0; i < w; i++) {
SendData(pgm_read_byte(&frame_buffer[i + j * w]));
}
}
}
//DISPLAY REFRESH
DisplayFrame();
}
void Epd::DisplayPartBaseImage(const unsigned char* frame_buffer)
{
int w = (EPD_WIDTH % 8 == 0)? (EPD_WIDTH / 8 ): (EPD_WIDTH / 8 + 1);
int h = EPD_HEIGHT;
if (frame_buffer != NULL) {
SendCommand(0x24);
for (int j = 0; j < h; j++) {
for (int i = 0; i < w; i++) {
SendData(pgm_read_byte(&frame_buffer[i + j * w]));
}
}
SendCommand(0x26);
for (int j = 0; j < h; j++) {
for (int i = 0; i < w; i++) {
SendData(pgm_read_byte(&frame_buffer[i + j * w]));
}
}
}
//DISPLAY REFRESH
DisplayFrame();
}
void Epd::DisplayPartBaseWhiteImage(void)
{
int w = (EPD_WIDTH % 8 == 0)? (EPD_WIDTH / 8 ): (EPD_WIDTH / 8 + 1);
int h = EPD_HEIGHT;
SendCommand(0x24);
for (int j = 0; j < h; j++) {
for (int i = 0; i < w; i++) {
SendData(0xff);
}
}
SendCommand(0x26);
for (int j = 0; j < h; j++) {
for (int i = 0; i < w; i++) {
SendData(0xff);
}
}
//DISPLAY REFRESH
DisplayFrame();
}
void Epd::DisplayPart(const unsigned char* frame_buffer)
{
int w = (EPD_WIDTH % 8 == 0)? (EPD_WIDTH / 8 ): (EPD_WIDTH / 8 + 1);
int h = EPD_HEIGHT;
if (frame_buffer != NULL) {
SendCommand(0x24);
for (int j = 0; j < h; j++) {
for (int i = 0; i < w; i++) {
SendData(pgm_read_byte(&frame_buffer[i + j * w]));
}
}
}
//DISPLAY REFRESH
DisplayPartFrame();
}
/**
* @brief: private function to specify the memory area for data R/W
*/
void Epd::SetMemoryArea(int x_start, int y_start, int x_end, int y_end)
{
SendCommand(0x44);
/* x point must be the multiple of 8 or the last 3 bits will be ignored */
SendData((x_start >> 3) & 0xFF);
SendData((x_end >> 3) & 0xFF);
SendCommand(0x45);
SendData(y_start & 0xFF);
SendData((y_start >> 8) & 0xFF);
SendData(y_end & 0xFF);
SendData((y_end >> 8) & 0xFF);
}
/**
* @brief: private function to specify the start point for data R/W
*/
void Epd::SetMemoryPointer(int x, int y)
{
SendCommand(0x4e);
/* x point must be the multiple of 8 or the last 3 bits will be ignored */
SendData((x >> 3) & 0xFF);
SendCommand(0x4F);
SendData(y & 0xFF);
SendData((y >> 8) & 0xFF);
WaitUntilIdle();
}
/**
* @brief: update the display
* there are 2 memory areas embedded in the e-paper display
* but once this function is called,
* the the next action of SetFrameMemory or ClearFrame will
* set the other memory area.
*/
void Epd::DisplayFrame(void)
{
//DISPLAY REFRESH
SendCommand(0x22);
SendData(0xc7);
SendCommand(0x20);
WaitUntilIdle();
}
void Epd::DisplayPartFrame(void)
{
SendCommand(0x22);
SendData(0xcF);
SendCommand(0x20);
WaitUntilIdle();
}
void Epd::SetFrameMemory(
const unsigned char* image_buffer,
int x,
int y,
int image_width,
int image_height
)
{
int x_end;
int y_end;
DigitalWrite(reset_pin, LOW); //module reset
DelayMs(2);
DigitalWrite(reset_pin, HIGH);
DelayMs(2);
SendCommand(0x3c);
SendData(0x80);
if (
image_buffer == NULL ||
x < 0 || image_width < 0 ||
y < 0 || image_height < 0
) {
return;
}
/* x point must be the multiple of 8 or the last 3 bits will be ignored */
x &= 0xF8;
image_width &= 0xF8;
if (x + image_width >= this->width) {
x_end = this->width - 1;
} else {
x_end = x + image_width - 1;
}
if (y + image_height >= this->height) {
y_end = this->height - 1;
} else {
y_end = y + image_height - 1;
}
SetMemoryArea(x, y, x_end, y_end);
SetMemoryPointer(x, y);
SendCommand(0x24);
/* send the image data */
for (int j = 0; j < y_end - y + 1; j++) {
for (int i = 0; i < (x_end - x + 1) / 8; i++) {
SendData(image_buffer[i + j * (image_width / 8)]);
}
}
}
void Epd::SetFrameMemoryPartial(
const unsigned char* image_buffer,
int x,
int y,
int image_width,
int image_height
)
{
int x_end;
int y_end;
DigitalWrite(reset_pin, LOW); //module reset
DelayMs(2);
DigitalWrite(reset_pin, HIGH);
DelayMs(2);
SetLut(WF_PARTIAL_1IN54_0);
SendCommand(0x37);
SendData(0x00);
SendData(0x00);
SendData(0x00);
SendData(0x00);
SendData(0x00);
SendData(0x40);
SendData(0x00);
SendData(0x00);
SendData(0x00);
SendData(0x00);
SendCommand(0x3c);
SendData(0x80);
SendCommand(0x22);
SendData(0xc0);
SendCommand(0x20);
WaitUntilIdle();
if (
image_buffer == NULL ||
x < 0 || image_width < 0 ||
y < 0 || image_height < 0
) {
return;
}
/* x point must be the multiple of 8 or the last 3 bits will be ignored */
x &= 0xF8;
image_width &= 0xF8;
if (x + image_width >= this->width) {
x_end = this->width - 1;
} else {
x_end = x + image_width - 1;
}
if (y + image_height >= this->height) {
y_end = this->height - 1;
} else {
y_end = y + image_height - 1;
}
SetMemoryArea(x, y, x_end, y_end);
SetMemoryPointer(x, y);
SendCommand(0x24);
/* send the image data */
for (int j = 0; j < y_end - y + 1; j++) {
for (int i = 0; i < (x_end - x + 1) / 8; i++) {
SendData(image_buffer[i + j * (image_width / 8)]);
}
}
}
/**
* @brief: After this command is transmitted, the chip would enter the
* deep-sleep mode to save power.
* The deep sleep mode would return to standby by hardware reset.
* The only one parameter is a check code, the command would be
* executed if check code = 0xA5.
* You can use Epd::Init() to awaken
*/
void Epd::Sleep()
{
SendCommand(0x10); //enter deep sleep
SendData(0x01);
DelayMs(200);
DigitalWrite(reset_pin, LOW);
}
/* END OF FILE */
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